Silent touch type of combination lock



June 13, 1933. A. E. WOLCOTT 1,913,697

SILENT TOUCH TYPE OF COMBINATION LOCK Filed Aug. 5, 1929 3 Sheets-Sheet 1 l 102' MI A M rws June 13, 1933. WQLCOTT 1,913,697

SILENT TOUCH TYPE OF COMBINATION LOCK Filed Aug. 5, 1929 5 Sheets-Sheet 2 62 HE 90 I 5 Jpne 13, 1933. A. E. WOLCOTT SILENT TOUCH TYPE OF COMBINATION LOCK 3 Sheets-Sheet 3 Filed Aug. 5, 1929 es'for enenclosedmitoniobile"look:

opel'eti-ngknob orthe likel i i y n M Aiuithet"objeetjofmy inventionis-having it a, look inwhi eh when the dooiwis looked imthe door hanwevmym turnedjineither direction without meeting a resistance and the connection with thehandle. n j-Another objeotof my invention is having Patented [June 13, 1933 it i ff lp mati flledAugus-t 529; semis; seems. i

1 invention bertains to -a combination l ook which is especially edaptedes a door flock and in the design illustrated isgshownj t feature L of my invention is that; the leak operates without necessitating a visible diel and the oonibinationean be located thuswfi thout watching; the movement of a it dial W 8nd also withouthstening? to the clicks in silent priniciplefand thej munbers of 'the' combination are located by the sense of "counting nu'nibei'sj. The look works on the tdlihe WI utilize an enumerator however, in

Whih the only indioationj of the counting of" the numbers to obtain the oon binetion is thesense of touohwhen opei ziting an therefore evels-comes the objections to looks inf which the door handle hase limited movement and when 'suoh limit is reached the handle nlay-be twisted forcibly by using 1 tools altd thus destroying the lock. With my-lock athief inffindingthe handle cone tinuously turning 'when the door is locked,

gives upthe attelnptof trying to destroy i the operating knob for counting the num- Y bets oftheeombinationnnd rotatingthe i tumblers, freetowtlifnfineitherdirection at r eny-itime, whether the look ds locked? or unlocked. This therefore overco111es jthe ob jeetio'n of a! thief turning the knob which meets a resistance andthen-forciblyjoperat y with iibck i which sf strong and j i cyin ioeIhousjing'isutilized;endjconneeted;. u tolithe ane f th door and in this i'ota tes i thesteh-L of thehend'l. V stelnextends prejferably from front to of the door andisuch: stein fqrlns esupport and a jou r-l nglfor, the rotating tumblers. These tumbllfs may i be; of any desired numbe s-thus giving 1 combination of from one countiito anydesirednumber, Another ob eet of my inventionishavi ng a. Zero latch;-this beingemeeinsbf locating a zero or starting 1 point Where the counting of the combination begins, this being done by pressing the knob inwardly eild rotating zero point is reached the knohis automat ically thrust outwardly slightly, at the seine time a click indicates the zero. In the per-a ticular look Whioh I illustrate it is prefer able to turn the knob in' eclockwise direction asthisplaces the tuinblers the proper position for beginning the Counting of the combination. s it y n u y y Another detailed object of niydnvention is piecing the operating knobdoeating the combination on the steni of the -hendle so that it is onlyneeessary to use one hand to grasp the handle and to operate the knob! From the feet that it is not neoessary to observe "the movement of the knob or dial,

nor necessary to listen toclieks orother sounds, m'ylockeen be operated inthe dark or also byfldeef -and blind people and in places where it is extreifnely noisy Where it 1 would be difiicult to detect the clicking sound of e loekfl operating on the sound ing the look maygive thefknob a pal tiel tum," remembering how" many ounts 'in whiohdirection he flotat'efd the. knob and; then by rotating the knobfin the opposite y direction the same niiinbeifof counts the lookihdy be unlocked; v By this system the? lock may be completely lunlocked in about principle. This also prevents "bystanders 1" 3 from counting the combination when a per: son unlo'cksjthelook.j I 1 1 n Another jdeteil feature end advanta efof my loekfis that n euthoiized person in look- 85 two seoonds and if tuniblers ere in the posi-w tion locking the look; tor a! three tumbler 1 o the :wm e e u kin y e'r adilt done about 5 or ,6seconds. it

inventionis illustrated in; the fiCCOlTlfi partying-drawings, in whiclnt i 7 Figure 1 may be oonsid'ereda horizontal? i n through. :11 door and through l the housing of my lock, illustrating certain interior parts in plan; 7

Fig. 2 is a vertical longitudinal section of Fig. l, with the knob and sleeve partly rotated and with the lock in the locked position;

Fig. 3 is a section similar to Fig. 2, with the lock in the position for unlocking and with the knob and sleeve partly rotated to illustrate the latching and enumerating levers;

Fig. 4 is a section similar to Fig. 2 with the latch lever in the latched position as when seeking for the zero or initial point of counting and with the lock in the locked position; 7 Y

Fig. 5 is a vertical transverse section showing principally the bolt shifting means,

certain. of the parts being broken .away;

Fig. 6 is a transverse section on the line 6 '.6 of Fig. 4, taken in thedirection of the arrows, showing part of the detent attached to therlock lever, showing the position when the lock is locked; X l

a Fig. 7 isa section similar to Fig. 6, showing the detentleverriding on the tumblers in .the p osition for unlocking the lock;

Fig. 8 .is a transverse section on the line 88 of Fig.4 in the directionof the arillustrating.the latching and enumerating levers in section;

Fig, 9 is a perspectiveviewv of the housing taken from the inside of the lock;

Fig. 10 is aperspective view of the handie and handle stem taken from the inside of the lock;

Fig. 11 is a perspectiveview of the operQ ating knob and the sleeve attached thereto,

taken from the. inside; I

Fig. 12 is a perspective view of a collar riding on the handle stem. and. inside of the sleeveand fitting partly in the sleeve, taken from the inside Figs 13 is a perspective view of the masterf or No.1 tumbler of the look; I

Figs. 14 and 15 are perspective views respectively of the second and third tumblers;

taken from the inside Fig. 16 is a horizontal section through. the lock above the operating 'parts thereof. n

Referring first to the general construc-., tion, the front panel-of a door is indicated by the numeral-11 and this has. a reinforc ing backing member 12, presuming the lock- .is fitted in a metal door such as" an automobile door. The backing plate of the lock is indicated by the'n'umeral 13'. This plate and panel13 and 11 are only illustrated by the parts adjacent'the lock. Thehousing' .is designated generally by the numeral 14.

This has a large interior bore 15 extending from the outer end inwardly, a succeeding smaller bore 16, there being-an annular shoulder 17 between 'these bores and the small end bore 18; there being a relatively the stem in place.

the outer panel 11 and the backing plate 12. A pin or other securing means 25 is indicated as being connected to the housing on' the outside and engaging in a small slot 26in the panel 11 ,and backing piece 12. I A U-shaped..locking piece. 27 fits int-an annular groove 28in the outside of the hous 1n fit s snugly against the backing member 12. This construction holds 'the housing from rotary andlongitudinal movement in they door. It isobvious that any other suitable type of construction may be adaptedfor this purpose, itbeing essential. that the housing. be attached to thejdoor' -to..be immovable treme inner end. "A cam 35. is fitted on-the, squared end of the stem. This cam has preferably an annular surface .36 which fits against the inner surface ofthe back plate 13 of the door and the cam has an annular projection 37 fitting'in the-circular opening 38, in this back panel. A cap screw 39' is threaded in the bore 34. of the stem, Such cap screw preferably has'a circular head 40 which may have a screw driverkerf or this may befiledoif leavinga smooth surface. The head of the cap. screw engages the outside of the back plate 13 and retains, .The cam has a-recess 41 in one side with a pin 42 bridging, this. The purposejof this pin is, hereunrecess. der detailed. I

The stem of thehandlehas a section 43 with an annularshoulder 44 be tween the cylindrical. sections 32 and 43. There is a third larger cylindrical section 45 with a small shoulder 46 between; the sections 43 and 45. An outer cylindrical section'47 has an annula'r'shoulder 48 separating it from'theannular section 45. The sec tion 47'inerges a curved section 49'into the handle proper (note particularly Figs.

2,3, 4 "and 10). The operating knob with its sleeve construction is designated gener= Thishas a certain spring tension and v bor 2;th s r h r merator lever has a nub 64 for; a purpose T l v b the ass m y. n mb r 0 (note g:-

washes 9 93 kn rl d at g k 51 Whichknob has an elognatedinternal A mariding fit on es ii nefi e t e and s em T e e afshalglow enlarged bore 53 which fits over sectionfl .of thle stem, there being an annulari shoulden e l between the bores: 52 and 53. Thesleeve has anouter cylindrical section 55 which; is adapted to havea rotary fit, in the the housing l i. There is a. shallowf annjular groove 56connecting the sleeve propervvith the knob which is.

purely ornamentaL, The sleeve also has a cylindrical section57 of slightly decreased r i defi-de a d endispr v d with a flattened innen surfaceqfioprojecting beyond thenub.

adapted to prevent noisef from this. lever when contacting ,with the slides of the slot 59,and to hold:the

trally spaced in the slot.

,In the oppositeside of the sleeve 50 and in. the slot 60 there is alarger lever .67. This isymounted on-a pivot pin68 which bridges the: inner end; of the slot and thisleverj has a hook 69eXtending from its inner; end and T ontheinsidetovvards the pintle. The enumerator lever "and y the large lever 62. and .67 1

respectivelmfare inwardly pressed by a semicircular or crshaped spring 70. This spring hereunder detailedhqOn the outer end of: i this collar there is a cylindrical v enumerator. -,;ring 174 which has a series of notches -7 5*in its iexterior surface. Ifind it oft-advantage to make this enumeratorlringvof a hard fibre] on j QlS G" of a. soft: metaltso that the; enumerator; lever whentengaging the notches 7 5 will b e Pi ll 'blfiiis. at ached to; each a side; of the enumerator lever and is enumerat on lever cen- I n a i meral 90 (see Fig. 13)., wh1ch tumblerhas i. Formed integral with thevcoll'argthereis an annular ring 7 6 against Q Which the enu meratoryring 7 4 abuts; the ring being'held from rotation by means of the pin 7 7 "fitting into thering 7 6. This ring76 has an annular the housing 14, This collar 81 has an annu:

larjrecess '83 which engages the inner end 84 of the collar 72 and there is alpin; 85in the collar extending into an endnotch 86 in the collar 72. Thus this collarwhenassembled in thehousing is prevented from rotating and forms a part; journal for the stemof the handle; l

A washer y87 is fitted on the cylindrical portion 32 ofthe sternand has a transverse slot 88 therein through which extends a pin 89. This pin passesdiametrically through the stem. Thepurposeofthis washer is to hold the assembly of the tumblerson the collar-'72 and at the same time retaining the collar atight position against the end of the collar 72.

qThe tumblers have a 1 01 master 7 tumbler designated generallvbyjthe nu} v loo an internal bore 91 bearing on the outside of thecylindrical section 92 of the collar 72 at. the end adjacent the ring 76. This tumbler. has an outer cylindrical section 93 which section has a longitudinal notch .94 forming thez eroguide to begin the enumerating of the combination. A rubber pin 95cprojects from one side of this section 98 and engages V the enumerator lever 62g1v-1ngthis a silent action when used to count the combination. The inner end ofthe N o. 1 or master tumbler; is providedyvith :an annular flange. 96, this having a cylindrical periphery 97. In

this; peripheryqthere is a shallow or V- shaped notch98 having rounded corners 99 joiningthe peripheral surface, this being for. the purpose hereunder detailed andbetween the flange 96 and theouter; cylindrical section 93 thereis a reduced neck ljOQ. 1 a :Aj driving pin 101 extends outwardly from the cylindricalsurface 93 of the No. 1 or master tumblerandjengages in the longitudinal notch ;102 extending inwardly from v the end Slot-the sleeve 50 having the oper;

ating knob; thereon .g-By this means the r0 tation of; the knob}rotates themaster tum: bler. A coiled compression spring 103 is ucoiled on,. the cylindrical section 43. on the" handleustem and thrusts against the enumerator ringt74onthe outside and againsta be placed thejdriven pin 107, which pin is used to drive the second tumbler which is designated generally by the numer'a'l- 108. (Note Fig. 14.) This tumbler has an-inner bore 109 which'is journaled on the cylindrical surface 92 of the collar 72 and is spaced from the flange 62 of the master tumbler by a spacing washer 110. This tumbler hasa cylindrical peripheral surface 111 with alongitudinal notch 112 therein." It is provided with a series of perforations "113 through the sides of the ring-like'tumbler and projecting from-one side there are driven'pins 114driven by the driver 10? of the master tumbler and on the opposite side preferably a single driver pin 115 which operates 011 the third tumbler.

The third tumbler designated generally bythe numeral 116 has an inner cylindrical surface 117 rotatabieon the cylindrical surface 92 of the collar 72 adjacent its inner-endand spaced from the second tumbler by a washer 118. This third tumbler has a cylindrical peripheral surface 119 with a longitudinal notch 120 therein. It is provided with a series of perforations 121 through the ringlike tumbler and in these'perforations there may be one or more driven pins 122.

The cam 35 is provided with a cam notch 123 (note Fig. 5), which is engaged bya slidable cam latch 124 having a V-shaped end 125. Thisend is slidable in a guide bracket 126 which is mounted on-the back plate 13 of the lock. A compression spring 127 coiled on a stem 1280f the cam latch, bears against the head"124"and a-guide bracket 129; thus giving this cam latch a sliding movement. Said latch is readily depressed out of the cam notch on rotation of the handle and its stem;

A trigger ty e of link 130 ispivotally' mounted on the bolt lever 131, this lever being pivotally mou'nted on apintle 132 which is secured to the back plate of the lock; the connection between the trigger and the bolt lever being by the pivot pin 133. The lower end of the bolt lever has a notch 134 which engages a pin 135 on the door-bolt 136. This bolt slides through a guide 137 and has anf operative latch end 138. A spring 139 engaging the pin 140 on the bolt and attached to a bracket 141 on the back plate of the lock, normally urges the bolt into its locking posi-- t'ioii. The limit of travel of the bolt is regu lated by the nubs 142 engaging the guide 137 and by the nub 143 engaging the inner eiidplate 144 of the lock. 5 I

' The lock trigger 130 is urged downwardly by a'tension spring 145 attached to' the trig ger and also to-a fixed eye 146'preferably on the bolt guide. The trigger has a-cut-out end 147 withan abutment'face'148 to engage-the pin 42on the cam." Thetip'149 of this trigger when in-its downward position strikes a rubber cushion pin 150 which is attachedpreferably to'the' rear or inner plate of thelock. I

- The controlling detent 151 (note particularly Figs. 2, 3, 4, 6 and'7), is fixedly secured to a shaft 152. This shaft is journaled in a bracket 153 on the edge plate 154 ofthe lock and in its forward end is journaled in a hole in the backing plate 12. This detent' has a lower edge 155 which rides on the cylindrical surface of the three tumblers and is adapted to fit in thenotches 98'of the master tumbler, 112 of "thes'ecQndtumbler, 120 ofthe third tumbler, when the tumblers are in position to allow unlocking andto lock. A curved arm 156 is rigidly attached to the-inner end of the rock shaft 152; this curving around the cam 35 and there is an angular endp'iece157 which extends underneath'the' trigger liiik 130. Whenthe detent151' is riding 'on'the; peripheral surface of anyone of the tumblers'the trigger'130 is held in a raised position, this being illustrated in full lines in'Fig. 5,. When however, the tumblers are in a position to allow. the detent to fit'in the three notches in the tumblers ab'ofve'mentioned, the rock shaft 152 is rocked so as to lower the arm 156,

allowing the trigger to be pulled downwardlyby the tension. spring 145, bringing the abutment face 148 into position to be engaged by the pin 42.0n the cann- 35. Therefore when the handle is rotated ina clockwise direction in'thepresent illustration, the trigger link 130 is giveiia movement to the right (having reference to Fig." 5). This swings tlie bolt lever'131 in an anti-clockwise direction and retracting the bolt 136 with its latch end 138 thus unlocking the The general operation of the combination features of lows? 7 It will be'noted that when the door is locked and thetrigger 130' is elevated in the position showniin'Fi'g. 5, on'the rotation of the handle-and itsstem inrotating the cam 35 that the pin 42 hasa clearance from the trigger-130. -Therefore the handle and its stem can be rotated in either direction as faras desired and meet noresistance whatever. Therefore a thief, when the door is locked, cannot bring the'handle and stem into a position where it meets resistance and thelock'is substantially as folforce destroy the 9k Th s tent 151 {is l on: the I peripheral surface:

of one or; more otthe cylindrical tiimblers and hernia-Lily v the knurledhnob 51 with its sleeve isthrust to its onterinost position as estimates-1; 29 m T e ator in opening the lockth rusts the knurled knob and thelsleeveinwardly'against the compression of thespring l03. This carries the latch if roml the position shown in 1 12,31 in which itflisriding on the periph S face 80' of'the ring 76; on the collar 72 to theposition illustrated in Fig. 4, in which itislpressed into the, longitudinal notch 9 L ofthe No, librinasteftunibler; this master tumbler and? the a sleev rotating" together ihfthemfl nnef above described by means of x thepin101 on themaster tumbler engaging the end notch 102 on the sleeve. This 'action] allows the hook 690i the latch 67 tofit initheanniilar grooVe'ZS of the rin 76 of the collar 72; Rotating theknob then brings the j latchfi'T so th at the inner or hook end: 69] releaseslat the sloping groove or notch 7Q ihithe ring76. This allows the spring to thriist'the knn rled knob outwardly and the acti onf gives alslight clicl; or noise.

i This indicates; that the combination features #5 er l qlt eze qip siti ntq rfl enumeraun ck na t e ea l efinilockfn-g nosi ion there is a slight clearance or tolerancefbetween thejshoulder 1 4s a quire first a ammo a a clockwisedirecrotating "the and itssleeve therefisfno fricti0nalres1st tioh; in this position the enumerator lever has its nl bu riding on the" eifipheral b it en me t l 1am n e knob] a slight hesitation is :felt b "drops; intoeacli of the notches le ifi. c -ic andx e no indicate t s actionl} Thedesired count'i the action of:theennmerating leyeif on the eniimerator ring. Then the linobflinay be with the 'sleeveto rotate "Oibthe stationary collar 72uhtil its driving pin engages one of the driven pins ontheNo. tumbler. This rotating action of the knobfcauses arotation of the second tumbler and then the third tumblenthrotigh the medium of the and driven pins: andthe No. 3 .tmn bler islshiited to location "by making the proper counts of the hesitation-s felt by rotated ih thei' oppositedirectidn thefdesired 0f l the tumbler brought 1 into location and finally the master tumbler isbrought into location, When the tumblers are in location the three notches t 98, 112and IQQare in alignment and are divrectly belowthe, opening 21in the housing 14, allowing the detent to drop and to lower": the trigger 130, allowing opening of the;

doorin the usnalway ,by rotatingthehandle; w

The notch98 of the master-tumbler haslthe sloping sid es99 to'enable it in locking the lockto raised the detent by turningthe,

knurled knob.v 1 A11 importa-n rotatedin either direction and will not ,meet a positive resistancegThe; V-s'haped resilitfeatiire invention that when thelock is locked so thatthe bolt is immovable, the handle and stemcan :be i i ently mounted cam latch engaging in the notch in thelcam 35 does not give a positive resistance to the rotation of the came-and stem, but functions to center the handle and stem: in proper position so that the pin42 will engage the triggerf link to shift the r a bolt in the unlocking operation; Therefore when the door is closedand looked, a thief cannot turn the handleuntil it meets apositive resistance and'thenby using additional force, suchasa hammeron the handle or using a pipe as a lever, use force tobreak a partfof the lock. Also the knurledlknob 50 may be rotated iIlBithBl direction, whether thelockis inthe locked or unlocked position.

This knob is freely" movable and therefore:

a-lthief cannot jam this intoawpositionlhav-l v t cf t e kl 1 It is quite ebyions that in enihneratingthe? l s-v t E i n nd client force to destroy" proper, combination it is not necessary ifor i a person to, observe the knob and the movement thereof; as in the first place they can locate the zerovor starting positionhy thrust ing the ,knob inwardly andturning it until it is" thrust outwardly by the spring 103;:

This action is readily observed bv the -sense of touchj and if desired the device. may give,

a slight; click; or noise: in locating the 'zero? or starting ,posltionr In shifting the tumblers; there is no soundi-emittedby the enn merator lever engaging L in the notches infthe enumerator ring but. there is aslight hesitat ing movement or slight resistance developed which indicates clearly to the operator the variouscounts' to be made obtaining this combination;

Another lfeature of invention is that the tunible rs rotate around the stein of the handle; there being a lfiXed Sleeve between a the t-Lllilblls and this stem and when every thingiis in position to shift the bolt, the" rotationjof tl1e 'ha11dleandstem cannot affect fVarion's ch principles of my inventiortwi'thout depart:

35 of touchor'feel, independent of visual oboperated by the combination locating '-debolt, an interconnecting device between the ing from the spirit thereof as set forth in the description, drawings and claims.

I claim: I r

1. A combination lock having a' movable handle and a combination locating device independent of the handle, the handle and the locating device being adapted to be positioned on the outside ofa door, thelocating device being slidable 'longitudinally and rotatable with means cooperating therewith to indicate the zero point for starting the til) 'having a knob-like enumeration of the combination, and means cooperating with the locating device to shift such device to its original position of longitudinal movement prior to enumerating the combination and means to limit the movementof the handle to a rotational novement. I

2. A combination lock having a handle with a stem, a combination locking device structure rotatably mounted on the stem, the knob and the handle being adapted for'positioning on. the outside of a door, the knob being slidable longitudinally of the stem, means to retain the knob in" the position of longitudinal movement, means cooperating with the knob in the rotation to release the knob, means to return the knob to its initial position rela-' tive tothe stem before the longitudinal movement, such actlon indicating a zero or starting position in enumerating the'com-' bination, means cooperating with the knob in the'rotation thereof to enumerate the numbers of the combination by thesense servation or by sound, a bolt connected with the lock, means operated by the stem when the, combination is in the unlocking position,

to shift the bolt by the rotation ofthestem, said means being'shiftable when the com bination is in the locked position," to allow rotation of the handle and stem'in either dllGCtlOIl wlthout meeting a positive resistance. i

1 1 3.'A combination-lock havinga handle and'a stem connected thereto, a combination locating device, the handlea-nd the locating device being adapted for'positioning on the outsideof a door, one or mo're'tumblers vice, a detent engaging said tumbler or tumblers to be retainedin the looking or unlocking position, an interconnecting means between the stem and the bolt'to shift the detent and the said means to shift the said means "to prevent'operation of the bolt by the stem when the detent is in the locking position, the positioning of such device and said interconnecting; means ,1 being adapted to permit rotation of the handle and the stem in either direction without meetlng positive resistance when the detent ,is in the locking position. a

4. A combination lock having a handle with a stem, the lock having a front and a rear plate, a fixed housing secured to one of the plates, a rotatable sleeve in the housing having a knob extending on the outside of the front plate of thelock, the stem being journaled in the said knob, the said stem' also having a journal in the back plate of the lock, a stationary collar'surrounding the stem, one or more ring-like rotatable tum- I blers on the collar, and an interconnecting means between the knob, the sleeve and the tumbler oi' tumblers to move said tumbler or tumblers to a position for unlocking the look, a bolt for the lock and means operated I by the stem'to shiftthe bolt into its unlocked position when thetu'mbler or tumblers are in a position to allow such unlock-j ing. 1

5. Acombination look as claimed in claim 4, the housing having an 'opening with a detent extending therethrough engagingthe tumbler or tumblers, said detent v in the locked positionot the lock riding on one or' more ofthe tumbler or tumblers and in thea said knob bein shiftable in an axial direction and rotatable to indicate a zero or startmg point for enumerating the combination, and means to return the knob to ts orig- .inal position at such zero or starting-position,such Zero locating operation being independent of visible observation or ofsound, and means operated y the, stem to unlock the bolt otthe lock. I

7. A combination lock havinga rotatable handle and stem, a cam connected tozthe stem, a slidable cam latch to engage said cam and to position the stem, a slidable bolt and means interconnectingthe cam and the bolt to shift the bolt to the unlocking position, the said cam latch and cam positioning part of said means in position to interconnect with the means to shift thebolt. Y

8. A lock having'a handle with astem connected thereto, said handle and stem being rotatable, a locking bolt, 'a combination of locking and unlocking devices, means interconnecting said devices, the stem, and the bolt for locating the bolt in the locked or unlocked position, and means permitting the free rotation of the handle and stem in either direction any number of times without meeting a positive resistance when the bolt is in the locked position and when the locking and unlocking devices are inany operative position they may assume when the bolt is lockedexcept the position for retracting the bolt. t V

9. A look having in combination a handle with a stem, the handle and stem being rotatable as a unit, a bolt, a trigger device for shifting the bolt to unlocked position only, means for interconnecting the stem and the trigger to shift the bolt, means to shift the trigger out of the engaging position when the bolt is in the locked posltion permitting free rotation of the handle and the stem in either direction any ,numberoftimes with out meeting a. positive resistance.

i 10. A look as claimed in claim 9, the lock having a combination of locking and unlock- I tioning said locking and 'unlockingdevicesf ing devices cooperating with the stem, and

a single knob rotatable on thestem for posiinthe proper position for looking or unlocking ofthe said bolt.

11. A lockhaving a means to prevent longitudinal sliding of p the handle, a locking bolt, an interconnecting means between the handle and the bolt to shift the bolt into unlocking position by may be freely rotatable in either direction rotation of the handle, means to render said interconnection inoperative when the bolt is inthe locked position whereby the handle without meeting a positive resistance and meansindependent of the operation of the handle to shift the bolt to locking position,

rotatable handle,

a '14. A 100k having a combination of lock;

ing and unlocking devices, a single rotat able knob for operating said devlces, means to ascertain a zero or starting posltion in i the rotation of such knob, and means to indicateby the sense of touch without observation or sound the desired rotation of the knob in either direction to locate said devices in a desired position for unlocking the lock, and a handlegindependent of the knob to unlock the lock, means independent of the action of the operator and operable at the zero position to shift the knob in a manner to indicate the zero or starting point.

15. A lock having in combination a tubular, fixed housing, a rotatable operating sleeve having a knob rotatable in said housing, a collar in the sleeve with means to secure said color stationary as regards the housing, a handle having a stem extending through the knob, the collar,the sleeve, and the housing, a combination of locking and unlocking deviceshaving parts thereof rotatably mounted on the said collar and actuated by the rotationof the knob and the sleeve, a lockingbolt operatedby the stem with means to interconnect the bolt and the stem through the medium of said dethe bolt to the locked and a a combination of rotatable locking and a unlocking devices formingpart ofthe inter connecting means, a rotatable knob for determining a comb nation andfor operating said devices, said knob being freelyrotatable j in either direction without meeting a posii an interconnecting means between said devices and the bolt actuating means to render said latter means inoperative when the bolt locked or unlockedposition. i t t 12. A lock having a rotatable handle, a

.tive resistance whether the bolt is in the locking bolt, a combination of lockingiand unlocking devices forming an nterconnection between the handle and the bolt, .a rotatable knobto operate said devices, a bolt actuating means operative by the handle,

is in the locked position whereby the handle may be rotatable in either directionwithout meetinga positive resistance, and the said knob alsobeing rotatable in either direction wlthout meeting a posltive resistance whether the bolt is locked or unlocked.

indicate a zero position of the combination 1 3. A lock as claimed in claim 12, the said knob being shiftable longitudinally 'to offthe said devices and in its rotation indieating by sense of touch without observation or sound thedesired positioning of the said devices. 

